Affected Products:
Single-Function: CS720, CS725, CS727, CS728 and C4150
Multifunction: CX725, CX727, XC4140, XC4143, XC4150 and XC4153

Issue Description:
Smudge or smear occurring on the side the page and the length may vary, typically between 0.5 – 2.0 inches vertically.
The defect is observed to repeat at imaging kit frequency (94 mm period), although some pages may not show it. See sample printouts below:

Solution:
Perform these steps below to fix the issue.

Load a new, dry, supported media. Then re-print to see whether this issue persists.
- If the Print Quality Issue has improved then issue is resolved.
- If the Print Quality Issue persists, proceed to the next step.

Ensure that the paper path is free from any contamination.
- If the Print Quality Issue has improved then issue is resolved.
- If the Print Quality Issue persists, proceed to the Still Need Help? section of this article..

Still Need Help?
Have the following available when calling Lexmark Technical Support;
LEGACY ID: SO8463